save project

diy1.py

@@ -4,8 +4,12 @@ while True:
     name = input("请输入账号")
     password = input("请输入密码")
     if name == username and password == userpassword:
+        print("登录成功")
         break
-    print("用户名和密码错误，请重新输入")
+    if name != username:
+        print("用户名错误，请重新输入")
+    if password != userpassword:
+        print("密码输入错误，请重新输入")
 print("欢迎来到贝尔编程")